In the US, we had a famous (at least to anyone in the know) schism between the Northern Baptists and the Southern Baptists.

The Northern Baptists were literally marrying run-away slaves to white people and Indians while calling for the abolition of slavery as an abomination against God.

The Southern Baptists were literally teaching slaves that God ordered slaves to obey their masters, and pushed a narrative that slavery was a civilizing force against paganism.

Hence why "A house divided against itself can not stand."

The ideological difference was simply too steep to bridge, and the factions split permanently, even to this very day, long after slavery had been abolished. The Northern and Southern Baptist sects are now much more similar, but they are still separate.